Overview
This Beitian TTL GNSS receiver module is designed for high-precision positioning applications including UAV & FPV drones, flight control, aerial surveying and mapping, precision agriculture, geodetic survey, deformation monitoring, marine navigation, automotive positioning, industrial IoT, timing synchronization, robotics, Arduino DIY, and other high-precision positioning fields.
Model (from provided text): BE-180 / BE-220 / BE-250 / BE-280 / BE-357 / BE-882 / BE-882i
Key Features
- Positioning method shown: GPS + BDS + GALILEO
- Horizontal accuracy shown: 2.0m CEP (also see test results section)
- Tracking sensitivity shown: -166dBm
- NMEA-0183 positioning output support (example NMEA messages listed below)
- Pi-type antenna network design with 50Ω impedance matching; antenna VSWR stated as < 1.6
- Antenna detection and short-circuit protection functions stated for practical applications
- Industrial-grade statement: supports hot, warm, and cold start command settings; adapts to various site voltage requirements
Specifications
BE-280 module main performance indicators (Table 1-1)
| Chip | M10050 |
| Receiver type | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN |
| Default position system | GPS, BDS, GALILEO |
| Augmentation system | SBAS, QZSS |
| Channel | N/A |
| Tracking & Navigation (sensitivity) | -166dBm |
| Reacquisition (sensitivity) | -160dBm |
| Cold start (sensitivity) | -148dBm |
| Hot Start (sensitivity) | -160dBm |
| Horizontal position | 2.0m CEP |
| Velocity | 0.05m/s |
| Dynamic heading | 0.3 deg |
| Time pulse | RMS 30ns; 99% 60ns |
| Cold start (acquisition) | 27s |
| Hot start (acquisition) | 1s |
| Aided start (acquisition) | 1s |
| Baud rate | 4800bps - 921600bps, default 115200bps |
| Level | TTL level |
| Protocol | NMEA, UBX |
| NMEA messages | RMC, VTG, GGA, GSA, GSV, GLL |
| Update rate | 0.25Hz-18Hz, default 1Hz |
| FLASH | With FLASH, the configuration can be changed, and the power will not be lost |
| Frequency of time pulse signal | Configurable from 0.25 Hz to 10 MHz, the default period is 1s, and the high level lasts for 100ms |
| Operational limits (altitude) | 80,000m |
| Operational limits (velocity) | 500m/s |
| Operational limits (dynamics) | <4g |
| Voltage | DC 3.6V-5.5V, typical: 5.0V |
| Current | 30mA/5.0V |
| Dimension | 28*28*8.4mm |
| Weight | 11.8g |
| Connector | 1.25mm 6pins connector |
| Operating temperature | -40°C ~ +85°C |
| Storage temperature | -40°C ~ +105°C |
| Built-in LED | TX LED: blue (data output, TX LED flashing); PPS LED: red (not bright when GPS not fixed, flashing when fixed) |
NMEA-0183 example data items (accurate data table)
| GGA | Time, position, number of satellites |
| GLL | Longitude, latitude, UTC time |
| GSA | GPS receiver operation mode, satellite used for positioning, DOP value, positioning status |
| GSV | Visible GPS satellite information, elevation angle, azimuth angle, signal-to-noise ratio |
| RMC | Time, date, position, speed |
| VTG | Ground speed information |
Pin definition (BE-280)
| PIN | Name | I/O | Description |
|---|---|---|---|
| 1 | 1PPS | O | 1 Pulse Per Second when 3D fixed |
| 2 | GND | G | Ground |
| 3 | TX | O | TTL Serial Data Output. |
| 4 | RX | I | TTL Serial Data Input. |
| 5 | VCC | I | DC 3.6V - 5.5V supply input, Typical: 5.0V |
| 6 | BOOT | I | N.C. |
Mechanical drawing dimensions (BE-280 diagram values, mm)
- 28.00 ± 0.2
- 25.00
- 8.4 ± 0.2
- 25.40
- 18.40
- 4.00
- 0.80
- Ø2.50
- 0.50 MAX
- 2.50
Test results shown
| Capture sensitivity test | |
| track | -167dBm |
| Recapture | -160dBm |
| Cold start | -148dBm |
| Hot Start | -157dBm |
| Positioning accuracy test | |
| Positioning Horizontal Accuracy | 1.5m CEP |
| Speed Accuracy | 0.05m/s |
| Dynamic Heading Accuracy | 0.3 deg |
| 1PPS Time Precision | RMS 30ns; 99% 60ns |
| Boot time test | |
| Cold start | 27 s |
| Hot Start | 1 s |
| Auxiliary start | 1 s |
| Power consumption test | |
| Voltage | DC 3.6V-5.5V, typical: 5.0V |
| Current | 30mA/5.0V |
Module selection (M10050 / M9140) tables
The following selection information is shown for multiple Beitian module variants.
M10050 module selection
| Model | Chip | Default position system | Channel | Horizontal | Baud rate (bps) | Update rate | Voltage | Current | Size | Weight | Connectors | Compass |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BE-126 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 3.3V | 30mA/5.0V | 16*12.2*2.4mm | 1g | 24pin SMD package | NO |
| BE-122 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 16.5*12.3*6.0mm | 3g | 1.00mm 4pin | NO |
| BE-166 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 3.3V | 30mA/5.0V | 16.2*16.2*7mm | 6g | 12pin SMD package | NO |
| BE-180 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 18*18*6.1mm | 4.9g | 1.00mm 4pin | NO |
| BE-220 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 22*20*6mm | 5.3g | 1.00mm 4pin | NO |
| BE-250 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 25*25*6mm | 8g | 1.00mm 4pin | NO |
| BE-250Q | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 25*25*6mm | 9g | 1.00mm 6pin | QMC5883Q |
| BE-280 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 28*28*8.4mm | 11.8g | 1.25mm 6pin | NO |
| BE-357 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 35*27*8.5mm | 13.9g | 1.25mm 6pin | NO |
| BE-450 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 56*9.8mm | 31g | 1.25MM 6pin with lock | QMC5883Q |
| BE-880 | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 28*28*11mm | 12g | 1.25mm 6pin | QMC5883Q |
| BE-880Q | M10050 | GPS, BDS, | N/A | 2.0m CEP | Default 115200bps | 1Hz | 5.0V | 30mA/5.0V | 28*28*8.5mm | 12g | 1.25mm 6pin | QMC5883Q |
M9140 module selection
| Model | Chip | Default position system | Channel | Horizontal | Baud rate (bps) | Update rate | Voltage | Current | Size | Weight | Connectors | Compass |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BK-126 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 3.3V | 45mA/5.0V | 16*12.2*2.4mm | 1g | 24pin SMD package | NO |
| BK-122 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 16.5*12.3*6.0mm | 3g | 1.00mm 4pin | NO |
| BK-166 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 16.2*16.2*7mm | 6g | 12pin SMD package | NO |
| BK-180 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 18*18*6.1mm | 4.9g | 1.00mm 4pin | NO |
| BK-220 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 22*20*6mm | 5.3g | 1.00mm 4pin | NO |
| BK-250 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 25*25*6mm | 8g | 1.00mm 4pin | NO |
| BK-250Q | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 25*25*6mm | 9g | 1.00mm 6pin | QMC5883Q |
| BK-280 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 28*28*8.4mm | 11.8g | 1.25mm 6pin | NO |
| BK-357 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 35*27*8.5mm | 13.9g | 1.25mm 6pin | NO |
| BK-450 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 56*9.8mm | 31g | 1.25MM 6pin with lock | QMC5883Q |
| BK-880 | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 28*28*11mm | 12g | 1.25mm 6pin | QMC5883Q |
| BK-880Q | M9140 | GPS, GLONASS, BDS, GALILEO | 92 | 1.5m CEP | Default 115200bps | 1Hz | 5.0V | 45mA/5.0V | 28*28*8.5mm | 12g | 1.25mm 6pin | QMC5883Q |
Wiring / Configuration Notes
- GPS module & USB-to-TTL cable: GND to GND, VCC to VCC, TX to RX, RX to TX.
- GPS module & MCU: 1PPS to IO, GND to GND, TX to RX, RX to TX, VCC to VCC.
- Shown debugging method: use a USB-to-TTL adapter cable to connect the module to a PC for configuration.
Electronic Compass Notes
Documentation states the module supports a built-in electronic compass and mentions a QMC5883L electronic compass. The module selection tables also indicate compass availability is model-dependent (examples shown include NO and QMC5883Q depending on the variant).
What's Included
- Cable
- Module
- 3M tape
Note: different module variants may match different cable types and 3M tape. For confirmation before ordering or customization requests, contact https://rcdrone.top/ or email support@rcdrone.top.
Applications
- UAV & FPV drones and flight control
- Aerial surveying and mapping
- Precision agriculture
- Geodetic survey and deformation monitoring
- Marine navigation
- Automotive positioning and industrial IoT
- Timing synchronization
- Robotics and Arduino DIY
- Shared bike, electric vehicle, unmanned vehicles
Customization & Documentation
- Support customization.
- Adjustable according to the product to meet requirements.
- Modules can be customized according to a sample or a concept.
- Complete product documentation is stated to support use and secondary development.
Details

A compact TTL GNSS receiver module built for drone and fixed-wing positioning.

Model comparison helps place the BE-280 within the Beitian GNSS module range.

The BE-280 supports GPS, BDS, and Galileo for flexible positioning setups.

Antenna design and protection features are highlighted for practical field use.

NMEA-0183 output includes standard position and speed data for integration.

Industrial-grade operation supports hot, warm, and cold start settings.

Test results summarize sensitivity, startup time, accuracy, and power use.

Small size and low-power operation make the module easy to integrate.

Pinout and mechanical dimensions simplify wiring and enclosure planning.

Wiring diagrams show both USB-to-TTL setup and MCU connection options.

Typical tracking and navigation applications range from mobility to unmanned systems.

The package includes the module, cable, and mounting tape for installation.
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